Ranking of Oregon Counties By Percentage of Population Aged 25 years and above with an Educational attainment of High School Graduate or Equivalent in 2021 (ACS-5Yrs)
Updated on September 3, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, the percentage of the population of Oregon (aged 25 years and above) who had an educational attainment of High School Graduate or Equivalent was 22.48%. Among all Oregon counties, Harney County had the highest percentage of its population (aged 25 years and above) with an educational attainment of High School Graduate or Equivalent (36.82%), followed by Grant County (35.56%), and Lake County (33.85%).
The chart below shows the top 10 Oregon counties, and the table below shows the ranking of all Oregon counties.
You can see similar information for other educational attainments.
You can also see similar information for other states and for the United States.
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Related Topics: Oregon ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census - ACS 5-Year Estimates.
Ranking of Oregon Counties By Percentage of Population (Aged 25yrs+) with an Educational Attainment of High School Graduate or Equivalent in 2021
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| Rank | County | Percentage of Population (Aged 25yrs+) (%) |
|---|---|---|
| 1 | Harney County | 36.82 |
| 2 | Grant County | 35.56 |
| 3 | Lake County | 33.85 |
| 4 | Morrow County | 33.24 |
| 5 | Union County | 33.08 |
| 6 | Columbia County | 32.87 |
| 7 | Klamath County | 32.74 |
| 8 | Gilliam County | 32.34 |
| 9 | Douglas County | 32.04 |
| 10 | Wheeler County | 31.89 |
| 11 | Malheur County | 31.66 |
| 12 | Crook County | 31.63 |
| 13 | Sherman County | 30.90 |
| 14 | Josephine County | 30.54 |
| 15 | Coos County | 30.07 |
| 16 | Umatilla County | 29.68 |
| 17 | Tillamook County | 29.42 |
| 18 | Jefferson County | 29.41 |
| 19 | Baker County | 29.35 |
| 20 | Linn County | 28.89 |
| 21 | Wallowa County | 28.22 |
| 22 | Curry County | 27.48 |
| 23 | Clatsop County | 27.46 |
| 24 | Wasco County | 26.98 |
| 25 | Marion County | 25.68 |
| 26 | Jackson County | 25.26 |
| 27 | Lincoln County | 24.07 |
| 28 | Yamhill County | 23.88 |
| 29 | Polk County | 22.94 |
| 30 | Lane County | 22.69 |
| 31 | Clackamas County | 21.66 |
| 32 | Deschutes County | 20.24 |
| 33 | Hood River County | 19.09 |
| 34 | Washington County | 17.30 |
| 35 | Multnomah County | 17.02 |
| 36 | Benton County | 14.45 |